Urgent:Help required with PSU 12v rails power distribution

Hi mates,
Need your help with my PSU, Here's my configuration:-

PSU: Gigabyte Superb E620

Intel i5 3550 Ivy Bridge
Gigabyte ga-b75m-d3h MoBo
4 gb GSkills 1600mhz Ram (1module)
500 GB SATA II hdd samsung 7200 rpm
60 GB Kingston SATA III SSD
other: 3 usb devices, 3 Case fans
windows 7 64 bit

PSU specification:

AC INPUT 100-240Vac 7.5-4A
DC OUTPUT +3.3V +5V +12V1 +12V2 -12V +5Vsb
OUTPUT CURRENT 24A 24A 18A 18A 0.5A 2.5A

Peak output 620w, 500w continous output (total 36A on +12v rail) (80+ certified)

I have bought a Radeon 7850 2 gb ddr5
I found that its Max power consumption is 130w (11Amps approx. on 12v rail)

12V2 has (4+4pin) 12V CPU Connector and 1 (6+2)-pin PCI-E Connector
12V1 has all the other pins + the other (6+2)-pin PCI-E Connector

Now guys I'm skeptical whether I should connect 12V1 or 12V2 (6+2)-pin PCI-E connector to the 7850,

as 12V2 is already used by CPU (max consumption of i5 3550 126w (around 10.5 amps)

while on the other hand +12V1 will be already powering the graphics card though PCIE port+ it is running all the other components.

please let me know though which (6+2)-pin PCI-E connector I can achieve the best power efficiency without touching the limits of either rail.

I cannot return this PSU and I haven't installed my card either.....
Help me so that I can install the card soon....

Thanks in advance :)
4 answers Last reply
More about urgent required psu 12v rails power distribution
  1. it's very disappointing..nobody has answered yet
  2. Either will work just fine. What brand is the PSU?
  3. thanks for the reply...its gigabyte

    gigabyte superb e620


    so u r saying that both the rails are capable of supplying sufficient power without touching their limit ?
  4. Yes it will be fine on either rail. It isn't the best quality PSU but it should do.
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